Kobold DWD Baffle Plate Flow Transmitter

Wiratama Mitra Abadi 01 19.27 flow measurement,

Kobold DWD Baffle Plate is a flow rate transmitter with a digital indication of the actual flow rate, analogue output and two adjustable all-or-nothing relays indicating the switching point for monitoring limit values. An RS232C serial interface is available as an option.

The combination of the proven displacement-deflection measuring technique with the new patented pendulum system and electronic analyser with programmable EEPROM produces a reliable and economical flow transmitter. Due to its modern technology and features this device is also ideally suited for applications where much more expensive methods of measurement have been used up until now.

The flow transmitter type DWD uses the reliable displacement-deflection technique together with new patented technology. The flowing medium presses against a baffle plate that is fastened to a pendulum – thus causing the displacement. The pendulum that is retained by a progressive spring system changes its position without friction and depending on the flow. The position of a magnet attached to the pendulum is sensed by a Hall-effect sensor fixed outside the medium. This signal is processed and evaluated by microchip-based electronics with EEPROM memory.

The devices are calibrated and supplied according to your specifications. Costly adjustments and programming are not required. The DWD is ready for immediate operation. The devices can be re-programmed if necessary. The casing can also be adapted easily for the desired mounting position. Numerous connections and materials allow a wide range of applications. Large line cross-sections can also be measured reliably and economically.

Kobold DWD Baffle Plate Areas of Application

Heavy goods industry
Rolling mills and mill trains
Chemicals and pharmaceuticals industries
Food and beverage industry
General mechanical engineering and capital equipment
Measuring and monitoring product, cooling and lubricant circuits

Advantages at a Glance

Ready for operation immediately
No bearings, no friction
Only a slightly moving part
Negligible sensitivity to dirt
Wider flow range
Small pressure loss
Any measuring ranges programmable
Linear signal

Kobold DWD Baffle Plate Technical Details

	Material combination	Material combination	Material combination
Device part	5	6	7
Pendulum case	Brass	stainless steel	stainless steel
Pendulum system	stainless steel	stainless steel	stainless steel
T piece	brass	stainless steel	PVC
Seals	FPM	FPM	FPM
Connecting thread	Brass	stainless steel	PVC
Connecting flange	steel zinc-plat.	stainless steel	PVC
Weld-on part	stainless steel	stainless steel	boring pipe box PVC
Electronics housing	aluminium coated PA 66	aluminium coated PA 66	aluminium coated PA 66
t_max*	120°C	120°C	20°C (60°C)
p_max*	25 bar	25 bar	16 bar (2 bar)

Flow range:
flow ratio 1:10 standard
(for example 10-100 l/min)
max. 1:25 upon request
Accuracy: ±1.5% of full scale
Medium temperature: -20°C...+120°C (other ranges upon request)
Max. pressure:
25 bar (higher values upon request)
16 bar (DWD-17/27/37)
Direction of flow: any
Analogue output: 0...10 V or 4...20 mA (switchable)
Switching contacts: 2 x 230 V, 1 A max., adjustable with indication on display
Display: LCD DOT-matrix module, 2 x 8 positions
Totaliser: with EEPROM memory
Power supply: 24 VDC ±10%
Current consumption: max. 200 mA
Protection type: IP65
Optional: RS232C serial interface